Belt buckle



FIG. 1 is a top- and front-facing perspective view of the belt buckle showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right-side elevational view thereof;

FIG. 5 is a left-side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines depict portions of the belt buckle that form no part of the claimed design. 

CLAIM The ornamental design for a belt buckle, as shown and described. 